MB86434PF 데이터 시트보기 (PDF) - Fujitsu

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MB86434PF

5V Single Power Supply Audio Interface Unit (AIU)

Fujitsu 

MB86434

• Tone Generator Control Output Level

External pins

Address Address Tone generator

1110

0111 circuit operating

data bits data bits

mode

PSC2 PSC1 PSC0 TONC D2 D1 D0 D3 (SW2)

Tone

(1)

Tone

(2)

0

0

0

— ——— —

1

0

0

— ——— —

—

1 or 1

0 ——— 0

SGC SGC

—

1 or 1

0 ——— 1

SGC SGC

—

1 or 1

1 1 —— —

—

—

—

1 or 1

1 0 —— —

—

—

—

1 or 1

1 —1 1

0

SGC SGC

—

1 or 1

1 —1 0

0

SGC

—

1 or 1

1 —0 1

0

SGC

—

1 or 1

1 —0 0

0

(Condition: EV3 = 0 dB)

Output pin

mode

LED TONEO

Remarks

L

H-Z

L

H-Z

L

SGC

L

H-Z

L

—

—

—

SGC

— –10 dBv Single tone output

— –10 dBv Single tone output

— –10 dBv Dual tone output

: Operational, : Power down, H-Z : High-impedance, L: L-level fixed, SGC: SGC fixed

Note: When the TONC pin signal is L-level, the tone generator circuit counters will be reset. When a dual tone is

generated at the time of reset, the initial phase settings for tone Œ and tone  will be in phase.

• Example: When Tone (1), Tone (2) are at the same frequency:

TONE

Tone (1)

H

L

SGC

Tone (2)

SGC

15

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